Warp beam for textile apparatus



H. BAGGEN ET AL wARP BEAM FOR TEXTILE APPARATUS Filed Dec. 2O,v 1966Dec, 3,1968

`mvnNToRs: HUBERT BAGGEN JOSEF EFFERN WOLFGANG KAHLERT BY: l

n/lllgaMcQa-gv/Jm United States Patent O 3,414,212 WARP BEAM FOR TEXTILEAPPARATUS Hubert Baggen, Oberbruch, Josef Effern, Heinsberg, andWolfgang Kahlert, Oberbruch, Germany, assignors to Glanzstoff A.G.,Wuppertal, Germany Filed Dec. 20, 1966, Ser. No. 603,196 Claimspriority, applicatigl (germany, Dec. 22, 1965,

1 5 5 Claims. (Cl. 242-1181) ABSTRACT 0F THE DISCLOSURE A warp beam usedfor conveying threads or yarns in textile apparatus which consists of atubular shaft with attached circular end flanges composed of a lightmetal with the inner facing surfaces 'of the flanges being covered by athin steel plate to provide resistance to abrasion by threads beingconveyed on the warp beam and to impact damage. The inner facingsurfaces of the steel plate are preferably coated with a hard chromelayer.

It is well known that the flange inner surfaces of warp beams, sectionalbeams or the like must be in perfect condition in running off orconveying abrasive threads or yarns lduring textile operations. Ingeneral, such flanged warp beams consist of a light metal or metalalloy, i,e. a metal with a specific gravity of less than 5, and they areusually made by being cast or drop forged. The inner facing surfaces 'ofthe light metal flanges are always treated according to a specialpolishing process, because these surfaces must be extremely smooth andexhlbit a very high degree of polish, However, it has been found thatthese surfaces have a quite unwizhed mfluence for the thread or yarn dueto the abrasive effect and are easily damaged caused by impact duringtransportation of the empty warp beams, so that individual warp beamsmust often 'be removed from operat1on for a reworking of the surfaces.

Attempts have been made to protect the inner surfaces of the flangesagainst rubbing and corrosion and also to impart a certain degree ofabrasion resistance to the surfaces by means of lacquers, el'oxation orother similar treatment. However, these known treatments are unable toprevent the surfaces from being damaged, because they remain just assensitive after such treatments as before with respect to the shock-likeor impact effect on these surfaces. In this respect, it is not thesurface characteristics of the flanges which are important but only theresistance to impact of the underlying substrate. Furthermore, theabrasion resistance achieved with known treating agents has been veryslight and does not prevent abrasion and impact damage. Apart from thefact that the reworking or repolishing of the damaged warp beam surfaceshas been very painstaking and timeconsuming, textile operations arefrequently hindered by severe damage to peripheral fibers on threads oryarns being run off the warp beam. Resurfaced flanges on the warp beamsoften possess minor flaws causing thread damage which could not bedetected during such resurfacing.

One object of the present invention is to provide an improved warp beamstructure in textile apparatus whereby it is possible to retain theessential lightness in weight of the warp beam While fully protectingthe inner surfaces of the flanges from abrasion and impact damage.

Another object of the invention is to substantially reduce or completelyeliminate the necessity of resurfacing the inner faces of the flanges onsuch warp beams.

These and other objects and advantages of the invention will become moreapparent upon a detailed consideration of the following specification:

3,414,212 Patented Dec. 3, 1968 Mice It has now been found, inaccordance with the invention, that very satisfactory results in textileoperations can be achieved by employing in combination with the textileapparatus for conveying threads, a warp beam consisting of a tubularshaft and two oppositely disposed circular flanges attachedconcentrically at either end of the shaft, both the shaft and flangesbeing composed of a light metal having a specific gravity of less than5, and a thin steel plate connected to and covering the inner opposingfaces of said flanges which are in running contact with thread conveyedthereover.

Surprisingly, it is possible to use a very thin steel plate with athickness of about 0.5 to 3 mm., preferably 0.8 to 2 mm., as a means ofprotecting the flange inner surfaces without substantially influencingthe economy of weight and proper functioning of the Warp beam asachieved only by the use of a light metal. A very satisfactory impactresistance by using a steelwhich has a tensile strength of at least 60kg./mm.2.

Furthermore, the abrasion resistance of the steel surface can be bestaccomplished, for example, by means of a hard chrome coating. Thus, ithas been established that a steel plate coated with a chrome layerhaving a thickness of 0.02 to 0.05 mm. is sufficient to avoidsubsubstantially all of the difficulties which are caused by thread oryarn abrasion and especially by impact damage during transportation ofthe empty beam. It is extremely important that the thickness of thesteel plate with or Without the chrome surface coating be kept as smallas possible to avoid an excessive total weight of the warp beam. In thisrespect, the ratio by weight of the steel plate to the warp beamcomposed of a light metal must be maintained below a value of 1:15 to1:10 depending from the warp beam size and length.

In order to attach the steel lining or face plate to the end flanges ofthe warp beam, any number of techniques can be used. The use ofconventional metal-to-metal adhesives has proven to be most effectivefor adherence of the steel plate to the flange. However, it is alsopossible to stiffen the steel plate by ending and fitting it intocorresponding grooves, bores or recesses in the light metal flange andthen strongly fastening the plate to the flange by means of adhesives,soldering or Welding or by means of suitably placed bolts which do notinterfere with the smooth inner surface of the protective plate.Likewise, one can provide an inner steel plate lining bolted to thelight metal flange and then adhere the outer protective steel plate tothe inner lining by means of a metal-to-metal adhesive.

The invention is further illustrated in detail with reference to severaldifferent embodiments shown in the accompanying drawing wherein:

FIG. 1 is a cross-sectional view through the longitudinal axis of thewarp beam constructed in accordance with one embodiment of the presentinvention;

FIG. la is a magnified section of one of the flanges shown in FIG. 1 soas to illustrate the presence of a hard chrome coating on the steelplate attached to the flange; and

FIGS. 2, 3 and 4 illustrate various other embodiments for attaching thesteel plate to the flange on the warp beam.

Referring now to the drawing, the warp beam constructed in accordancewith this invention consists first of all of the conventional structureof a central tubular shaft or spindle 1 and the opposing end flanges 2which are connected with the shaft and are circular in shape so as to bemounted concentrically around the longitudinal axis of the shaft, forexample by means of screw threads located at 3. Of course, otherconventional means can also be employed for attaching and fastening theend flanges to the shaft. In all of the embodiments of this invention,the inner side or face of each of the anges is covered with a circularring-shaped steel plate 5, which is preferably coated on its innersurface with a hard chrome layer C as indicated in FIG. la. The steelplate is most advantageously attached to the light metal flange by meansof a convenitonal metal adhesive A as shown in FIG. la, and in this casethe inner diameter 6 of the steel plate 5 extends up to the hub of theange 2, while the outer diameter of this steel plate is slightly smalleror bevelled inwardly from the outer periphery 4 of the ange 2.

Another embodiment of the steel lining or protective plate is shown inFIG. 2 which generally corresponds with respect to its arrangement andinner diameter with the steel plate of FIG. 1. However, the outer rim 8of the circular steel disk or plate is bent outwardly to lit over theouter periphery 4 of the flange 2. In this instance, the steel plate canalso be suitably fastened to the light metal flange with a known metaladhesive, but on account of the reinforcing or stitfening effectprovided by the rim 8, it is also possible to tightly screw the plate 7by means of one or more suitable bolts 9 (shown in dotted lines) whichare preferably strongly fastened on the outer or supporting side of thesteel plate. In a similar manner, a steel inner lining can rst be boltedto the flange and a second face plate made of steel adhered thereto.

A further embodiment is shown in FIG. 3, and in this case a circularportion on the inner face of the ange 2 has been cut away to form acircular recessed portion 13 with a depth corresponding to the thicknessof the steel plate 10 which is then securely fastened in this recessedportion. The inner diameter of the circular steel disk o1' annular ringplate 10 is somewhat greater than the outer diameter of the warp beamshaft 1, preferably about to 20 mm. greater in diameter. At the sametime, the outer diameter of the steel plate or ring is preferably aboutto 50 mm. smaller than the outer diameter of the flange.

Still another embodiment similar to that shown in FIG. 3 is illustratedin FIG. 4. The circular steel plate 16 is similar in its dimensions tothe plate 10 of FIG. 3, but an outwardly bent rim 14 and 15 is providedaround the inner and outer diameters of the plate, respectively. Theserims 14 and 15 fit into corresponding annular grooves recessed into theinner facing surface of the flange.

Other possible means of attaching the steel cover plate to the lightmetal flange will be readily apparent to one skilled in this art. Forexample, the plate can also be threaded or tted onto the hub of theflange, e.g. by decreasing the diameter of the hub by an amountcorresponding to a two-fold thickness of the plate and then providing acorresponding protuberance in the form of a sleeve or hub-like rim atthe inner diameter of the plate so as to t into the resulting recessedportion of the shaft which is normally extended by the hub of the ange.This inwardly projecting protuberance, sleeve or hub-like rim of thesteel plate can be extended up to the point where it would join theshaft 1 at the edge 3 which previously contacted the hub of the flange.Also, this protuberance or sleeve can be threaded on its inner diameterto engage with corresponding threads on the hub of the flange.

It will be apparent that the means of fastening the steel plate or diskonto the inner face of the ange is not of decisive importance. Knownmeans of fastening or connecting such thin plates can be used in everyinstance which will guarantee a strong joint and thereby remove anydanger that the threads or yarns being wound on the warp beam willbecome damaged during running off or conveyance thereover. However, inaccordance with the present invention, the use of metal-to-metaladhesives is especially advisable in order to ensure satisfactoryresults in preventing thread damage.

The construction of the warp beam in accordance with this inventionpermits considerable economies to be effected in carrying out textileoperations continuously over a long period of time without any need forresurfacing the inner faces of the flanges or even replacing theprotective steel plates. The warp beams function in a satisfactorymanner even with the addition of these steel plates, and the damagecaused by impact forces is reduced substantially as well as the possibledamage which might otherwise be caused by abrasion.

The invention is hereby claimed as follows:

1. In textile apparatus for conveying threads, a warp beam consisting ofa tubular shaft and two oppositely disposed circular anges attachedconcentrically at either end of said shaft, said shaft and flanges beingcomposed of a light metal having a specific gravity of less than 5, athin steel plate having a thickness of 0.5 to 3 mm. and a tensilestrength of at least kg./mm.2 connected to and covering the inneropposing faces of said anges which are normally in running contact withthread conveyed thereover, and a hard chrome layer of a thickness of0.02 to 0.5 mm. coated onto the inwardly facing surface of each steelplate.

2. A warp beam in textile apparatus as claimed in claim 1 wherein saidsteel plate has a thickness of 0.8 to 2 mm.

3. A warp beam in textile apparatus as claimed in claim 1 wherein saidsteel plate is in the shape of a flat, circular, ring-shaped disk havingan inner diameter which is 5 to 20 mm. larger than the outer diameter ofsaid shaft and also having an outer diameter which is 10 to 50 mm.smaller than the flange outer diameter, and said plate is mounted in arecessed portion of the inner face of each of said flanges so as to beflush with said inner faces.

4. A warp beam in textile apparatus as claimed in claim 1 wherein saidsteel plate is connected to said ange by means of a metal-to-metaladhesive.

5. A warp beam in textile apparatus as claimed in claim 1 wherein theratio by Weight of the steel plate to the light metal warp beam is lessthan about 1:10.

References Cited UNITED STATES PATENTS 1,298,287 3/1919 Brandwood242-118-1 2,527,519 10/ 1950 Bliss 242-118.61 2,548,899 4/1951 Lang242-1181 X 2,837,297 6/1958 Moss 242-118.62 3,099,417 7/ 1963 Portal242-118.62

GEORGE F. MAUTZ, Primary Examiner.

